Jenkins url not set

[elopio]

I have a problem with the jenkins url. When I deploy the container, it is not set:

ubuntu@snappy-jenkins:/jenkins$ grep -r 10.55.32.40
ubuntu@snappy-jenkins:/jenkins$

If I try to use $BUILD_URL in a job, it is not expanded.

Then I log in and go to http://10.55.32.40:8080/configure
The value of jenkins url is set to http://10.55.32.40:8080/
Next I save it and:

ubuntu@snappy-jenkins:/jenkins$ grep -r 10.55.32.40
jenkins.model.JenkinsLocationConfiguration.xml: http://10.55.32.40:8080/
ubuntu@snappy-jenkins:/jenkins$

Now if I use $BUILD_URL, it works.
So the value seems to be set only when I manually go to the config and save it.
I suppose I can create jenkins.model.JenkinsLocationConfiguration.xml on my docker file, but the IP is auto assigned to me by openstack, so I don't know how to tell the docker file to put the IP in there.

[ndeloof]

Jenkins can't know it's external IP, it relies on browser to detect it. No way for this to be fixed

[elopio]

I guess I can get a known public ip from openstack, and assign it to the machine during the deploy.

[ndeloof]

This would then be specific to your deployment. For such case, include a custom init groovy script that will setup jenkins rootUrl according to environment.